Here is a site that will conjugate most Turkish verbs

http://www.verbix.com/languages/turkish.shtml

Just type okumak into the box and hit enter. 

If I get time later, I will add some more explanations about simple or aorist tense and when it is used.

See also:

http://www.turkishclass.com/forumTitle_12253_-1

http://www.turkishclass.com/forumTitle_11789

http://www.turkishclass.com/forumTitle_49125

A verb in the present tense is sometimes a bit carelessly described as referring to an action taking place now, but should more accurately be seen as showing an continuous action or state or a series of actions that is not completed, or something which someone usually do: "I play football" will most likely mean that you sometimes play football, or that you can or know how to play football, not necessarily that you are playing football at this very moment. To show that something is happening right now, English, by using an auxiliary verb and by adding the ending -ing to the main verb, has a special "progressive" form: "I am playing football". In Swedish there is strictly speaking only one form for the present that you will have to pay attention to, however, a form that almost always end in an -r.

The endings of the verbs in the present are, to be more specific:

• Group 1: -ar (or -[a]r, since the a technically speaking is a part of the stem of the verb and not the ending)
• Group 2A and 2B: -er
• Group 3: -r
• Group 4: The verbs in this often - but not always - end in -er and -r as well.

in Turkish simple present tense has an habitual aspect which means we use it to tell the things we do habitually.

I go to cinema every wekend. = Her hafta sonu sinemaya giderim.

I play football at least once a week. = Haftada enaz bir kere futbol oynarım.

I drink ayran instead of cola. = Kola yerine ayran içerim.

I don´t smoke. = Sigara içmem.

etc.

By the way there is some similarity between Swedish and Turkish as far as the suffix used for simple present tense is concerned. We see such suffix in English as well but only for the 3rd sing. person:

Jag spélar fótbóll. = Futbol oynarım. (I play football.)

Vi spélar fótbóll. = Futbol oynarız. (We play football.)

Han spélar fótbóll. = Futbol oynar. (He plays football.)

Hon spélar fótbóll. = Futbol oynar. (She plays football.)

I never noticed that the present tense marker is almost the same in Swedish and Turkish before you mentioned it. (There must be a different box in the brain for every language.)

Swedish gets along perfectly well with one present tense form just like Finnish which has a big Swedish influence even in its grammatical structure. The Swedish have three or four future tenses though, we have none. I sometimes notice that foreigners who try to learn Finnish try to create some kind of present continuous or future forms and it´s possible with some tricks with infinitives and participles but it sounds artificial.

Lewis says that Turkish aorist is noun based, and that´s why he gives a nice explanation for it´s meaning: ´I am a doer´ or ´I am this kind of person who does´. I thought for learners like me who can´t easily understand the continuous tenses maybe another way of approaching the question is to try to understand the limitations of aorist tense: it is not tied to a certain situation or state of world or even state of mind.

Actually we can see it as a copula (Consider V+aorist suffix as an adjective and assume the verb is "to be")

I am a teacher = Ben bir öğretmenim

You are a teacher = Sen bir öğretmensin

He/she is a teacher = O bir öğretmen-.

We are teachers = Biz öğretmeniz

You are teachers = Siz öğretmensiniz

They are teachers = Onlar öğretmenler

Now make it a aorist tense sentence:

I teach = Ben öğretirim

You teach = Sen öğretirsin

He/she  teachs = O öğretir-.

We  teach = Biz öğretiriz

You  teach = Siz öğretirsiniz

They  teach = Onlar öğretirler

Can you see the similarity? The same personal suffixes.

Now take yazar=writer for example:

I am a writer = Ben yazarım

You are writer  = Sen yazarsın

He/she  is a writer = O yazar-.

We  are writers = Biz yazarız

You  are writers = Siz yazarsınız

They  are writers = Onlar yazarlar

I write = Ben yazarım

You write  = Sen yazarsın

He/she  writes = O yazar-.

We  write = Biz yazarız

You  write = Siz yazarsınız

They  write = Onlar yazarlar

Every learner should look at this message of yours carefully, si++.

We can say the same things for Turkish future tense also:

Consider V+ -acak/-ecek as an adjective (which actually is)

Gelecek = willing to come or having an intention to come

Gelecek olmak = to have an intention to come

Use the same suffixes

Geleceğim = I am willing to come or I am having an intention to come = I have an intention to come = I will come

Gelecek sin = You are willing to come or You are having an intention to come = You have an intention to come = You will come

Gelecek-. = He/she is willing to come or He/she is having an intention to come = He/she has an intention to come = He/she will come

Geleceğiz = We are willing to come or We are having an intention to come = We have an intention to come = We will come

Geleceksiniz = You are willing to come or You are having an intention to come = You have an intention to come = You will come

Gelecekler = They are willing to come or They are having an intention to come = They have an intention to come = They will come

The inferential -miş borrows its personal endings from the verb ´to be´ as well.